Example usage for com.google.common.base Stopwatch Stopwatch

Introduction

In this page you can find the example usage for com.google.common.base Stopwatch Stopwatch.

Prototype

Stopwatch()

Source Link

Usage

From source file:co.cask.tephra.TransactionManager.java

public Transaction checkpoint(Transaction originalTx) throws TransactionNotInProgressException {
    txMetricsCollector.rate("checkpoint");
    Stopwatch timer = new Stopwatch().start();

    Transaction checkpointedTx = null;//  ww w .j a v  a 2  s . co  m
    long txId = originalTx.getTransactionId();
    long newWritePointer = 0;
    // guard against changes to the transaction log while processing
    this.logReadLock.lock();
    try {
        synchronized (this) {
            ensureAvailable();
            // check that the parent tx is in progress
            InProgressTx parentTx = inProgress.get(txId);
            if (parentTx == null) {
                if (invalid.contains(txId)) {
                    throw new TransactionNotInProgressException(String
                            .format("Transaction %d is not in progress because it was invalidated", txId));
                } else {
                    throw new TransactionNotInProgressException(
                            String.format("Transaction %d is not in progress", txId));
                }
            }
            newWritePointer = getNextWritePointer();
            doCheckpoint(newWritePointer, txId);
            // create a new transaction with the same read snapshot, plus the additional checkpoint write pointer
            // the same read snapshot is maintained to
            checkpointedTx = new Transaction(originalTx, newWritePointer,
                    parentTx.getCheckpointWritePointers().toLongArray());
        }
        // appending to WAL out of global lock for concurrent performance
        // we should still be able to arrive at the same state even if log entries are out of order
        appendToLog(TransactionEdit.createCheckpoint(newWritePointer, txId));
    } finally {
        this.logReadLock.unlock();
    }
    txMetricsCollector.histogram("checkpoint.latency", (int) timer.elapsedMillis());

    return checkpointedTx;
}

From source file:org.apache.tephra.TransactionManager.java

public void abort(Transaction tx) {
    // guard against changes to the transaction log while processing
    txMetricsCollector.rate("abort");
    Stopwatch timer = new Stopwatch().start();
    this.logReadLock.lock();
    try {/*  w  w  w .java  2 s. c  o  m*/
        synchronized (this) {
            ensureAvailable();
            doAbort(tx.getTransactionId(), tx.getCheckpointWritePointers(), tx.getType());
        }
        appendToLog(TransactionEdit.createAborted(tx.getTransactionId(), tx.getType(),
                tx.getCheckpointWritePointers()));
        txMetricsCollector.histogram("abort.latency", (int) timer.elapsedMillis());
    } finally {
        this.logReadLock.unlock();
    }
}

From source file:org.apache.tephra.TransactionManager.java

public boolean invalidate(long tx) {
    // guard against changes to the transaction log while processing
    txMetricsCollector.rate("invalidate");
    Stopwatch timer = new Stopwatch().start();
    this.logReadLock.lock();
    try {/*from  w ww  .j a  v a  2s .  c  om*/
        boolean success;
        synchronized (this) {
            ensureAvailable();
            success = doInvalidate(tx);
        }
        appendToLog(TransactionEdit.createInvalid(tx));
        txMetricsCollector.histogram("invalidate.latency", (int) timer.elapsedMillis());
        return success;
    } finally {
        this.logReadLock.unlock();
    }
}

From source file:org.apache.tephra.TransactionManager.java

/**
 * Removes the given transaction ids from the invalid list.
 * @param invalidTxIds transaction ids/*from w w w .  ja v a 2s . c  o  m*/
 * @return true if invalid list got changed, false otherwise
 */
public boolean truncateInvalidTx(Set<Long> invalidTxIds) {
    // guard against changes to the transaction log while processing
    txMetricsCollector.rate("truncateInvalidTx");
    Stopwatch timer = new Stopwatch().start();
    this.logReadLock.lock();
    try {
        boolean success;
        synchronized (this) {
            ensureAvailable();
            success = doTruncateInvalidTx(invalidTxIds);
        }
        appendToLog(TransactionEdit.createTruncateInvalidTx(invalidTxIds));
        txMetricsCollector.histogram("truncateInvalidTx.latency", (int) timer.elapsedMillis());
        return success;
    } finally {
        this.logReadLock.unlock();
    }
}

From source file:org.apache.tephra.TransactionManager.java

/**
 * Removes all transaction ids started before the given time from invalid list.
 * @param time time in milliseconds//from ww w.  j  a  v  a  2  s . c o  m
 * @return true if invalid list got changed, false otherwise
 * @throws InvalidTruncateTimeException if there are any in-progress transactions started before given time
 */
public boolean truncateInvalidTxBefore(long time) throws InvalidTruncateTimeException {
    // guard against changes to the transaction log while processing
    txMetricsCollector.rate("truncateInvalidTxBefore");
    Stopwatch timer = new Stopwatch().start();
    this.logReadLock.lock();
    try {
        boolean success;
        synchronized (this) {
            ensureAvailable();
            success = doTruncateInvalidTxBefore(time);
        }
        appendToLog(TransactionEdit.createTruncateInvalidTxBefore(time));
        txMetricsCollector.histogram("truncateInvalidTxBefore.latency", (int) timer.elapsedMillis());
        return success;
    } finally {
        this.logReadLock.unlock();
    }
}

From source file:net.myrrix.client.ClientRecommender.java

@Override
public boolean await(long time, TimeUnit unit) throws TasteException, InterruptedException {
    Preconditions.checkArgument(time >= 0L, "time must be positive: {}", time);
    Preconditions.checkNotNull(unit);/*from w  w w. java 2  s  . c om*/
    long waitForMS = TimeUnit.MILLISECONDS.convert(time, unit);
    long waitIntervalMS = FastMath.min(1000L, waitForMS);
    Stopwatch stopwatch = new Stopwatch().start();
    while (!isReady()) {
        if (stopwatch.elapsed(TimeUnit.MILLISECONDS) > waitForMS) {
            return false;
        }
        Thread.sleep(waitIntervalMS);
    }
    return true;
}

From source file:org.apache.tephra.TransactionManager.java

public Transaction checkpoint(Transaction originalTx) throws TransactionNotInProgressException {
    txMetricsCollector.rate("checkpoint");
    Stopwatch timer = new Stopwatch().start();

    Transaction checkpointedTx;/*from  w  w  w.j a  v  a  2s.  com*/
    long txId = originalTx.getTransactionId();
    long newWritePointer;
    // guard against changes to the transaction log while processing
    this.logReadLock.lock();
    try {
        synchronized (this) {
            ensureAvailable();
            // check that the parent tx is in progress
            InProgressTx parentTx = inProgress.get(txId);
            if (parentTx == null) {
                if (invalidTxList.contains(txId)) {
                    throw new TransactionNotInProgressException(String
                            .format("Transaction %d is not in progress because it was invalidated", txId));
                } else {
                    throw new TransactionNotInProgressException(
                            String.format("Transaction %d is not in progress", txId));
                }
            }
            newWritePointer = getNextWritePointer();
            doCheckpoint(newWritePointer, txId);
            // create a new transaction with the same read snapshot, plus the additional checkpoint write pointer
            // the same read snapshot is maintained to
            checkpointedTx = new Transaction(originalTx, newWritePointer,
                    parentTx.getCheckpointWritePointers().toLongArray());
        }
        // appending to WAL out of global lock for concurrent performance
        // we should still be able to arrive at the same state even if log entries are out of order
        appendToLog(TransactionEdit.createCheckpoint(newWritePointer, txId));
    } finally {
        this.logReadLock.unlock();
    }
    txMetricsCollector.histogram("checkpoint.latency", (int) timer.elapsedMillis());

    return checkpointedTx;
}

From source file:org.rhq.enterprise.server.cloud.StorageNodeManagerBean.java

private Stopwatch stopwatchStart() {
    if (log.isDebugEnabled()) {
        return new Stopwatch().start();
    }
    return null;
}

From source file:org.apache.tephra.TransactionManager.java

private void appendToLog(TransactionEdit edit) {
    try {//from  w ww .jav a2 s . c  om
        Stopwatch timer = new Stopwatch().start();
        currentLog.append(edit);
        txMetricsCollector.rate("wal.append.count");
        txMetricsCollector.histogram("wal.append.latency", (int) timer.elapsedMillis());
    } catch (IOException ioe) {
        abortService("Error appending to transaction log", ioe);
    }
}

From source file:org.apache.tephra.TransactionManager.java

private void appendToLog(List<TransactionEdit> edits) {
    try {//from w  w  w  .  j  ava2s. c  om
        Stopwatch timer = new Stopwatch().start();
        currentLog.append(edits);
        txMetricsCollector.rate("wal.append.count", edits.size());
        txMetricsCollector.histogram("wal.append.latency", (int) timer.elapsedMillis());
    } catch (IOException ioe) {
        abortService("Error appending to transaction log", ioe);
    }
}